<template>	
	<el-container class="home-container">
		<!-- 头部区域 -->
	  <el-header>
		  <div>
			<img src="" alt="" />  
			<span>电商后台管理系统</span>
		  </div>
		<el-button type="info" @click="logout">退出</el-button>
	  </el-header>
	  <!-- 页面主体区域 -->
	  <el-container>
		  <!-- 侧边栏 -->
	    <el-aside :width="isCollapse ? '64px' : '200px'">
			<div class="toggle-button" @click="toggleCollapse">|||</div>
			<el-menu
			  background-color="#333744"
			  text-color="#fff"
			  active-text-color="#409eff"
			  unique-opened
			  :collapse="isCollapse"
			  :collapse-transition="false"
			  :router="true"
			  :default-active = "activePath" 
			  >
			  <!-- 一级菜单 -->
			  <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
				  <!-- 一级菜单模板区域 -->
			    <template slot="title">
					<!-- 图标 -->
			      <i :class="iconsObj[item.id]"></i>
				  <!-- 文本 -->
			      <span>{{item.authName}}</span>
			    </template>
					   <!-- 二级菜单 -->
			      <el-menu-item @click="saveNavState('/'+subItem.path)"  :index=" '/'+subItem.path" v-for="subItem in item.children" :key="subItem.id">
					  <template slot="title">
					  	<!-- 图标 -->
					    <i class="el-icon-menu"></i>
					    <!-- 文本 -->
					    <span>{{subItem.authName}}</span>
					  </template>
				  </el-menu-item>
			  </el-submenu>
			 
			</el-menu>
		</el-aside>
		<!-- 右侧区域 -->
	    <el-main>
			<router-view></router-view>
		</el-main>
	  </el-container>
	</el-container>
</template>

<script>
	export default {
		data() {
			return{
				// 左侧菜单
			menulist:[],
			iconsObj:{
				'125':'iconfont icon-user',
				'103':'iconfont icon-tijikongjian',
				'101':'iconfont icon-shangpin',
				'102':'iconfont icon-danju',
				'145':'iconfont icon-baobiao'
			},
			// 是否折叠
			isCollapse:false,
			// 被激活的链接地址
			activePath:''
			} 
		},
		created() {
			this.getMenuList();
			this.activePath = window.sessionStorage.getItem('activePath')
		},
		methods:{
			// 获取左侧菜单
			async getMenuList(){
				const {data:res} = await this.$http.get('menus');
				// console.log(res)
				if(res.meta.status !== 200) return this.$message.error(res.meta.msg);
				this.menulist = res.data
			},
			// 退出功能
			logout() {
				// 清除token
			window.sessionStorage.clear();
			// 退出到login
			this.$router.push("/login");
			},
			// 点击按钮切换菜单折叠与展开
			toggleCollapse(){
				this.isCollapse = !this.isCollapse
				// if(this.isCollapse ==true)
			},
			// 保存链接激活状态
			saveNavState(activePath){
				window.sessionStorage.setItem('activePath',activePath)
				this.activePath = activePath
			}
			
		},
	};
</script>

<style lang="less" scoped="scoped">
	.home-container{
		height: 100%;
	}
	.el-header{
		background-color:#373d41 ;
		display: flex;
		justify-content: space-between;
		align-items: center;
		color: #fff;
		font-size: 20px;
		> div{
			display: flex;
			line-height: 15px;
		}
	}
	.el-aside{
		background-color: #333744;
		.el-menu{
			border-right: none;
		}
	}
	.el-main{
		background-color:#eaedf1;
	}
	.iconfont {
		margin-right: 10px;
	}
	.toggle-button{
		background-color: #4a5064;
		font-size: 10px;
		line-height: 24px;
		color: #fff;
		text-align: center;
		letter-spacing: 0.2em;
		cursor: pointer;
	}
</style>
